package filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter({"/admin/*"})
public class AdminLoginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        HttpSession session = request.getSession();

        response.setContentType("text/html;charset=UTF-8");
        response.setCharacterEncoding("UTF-8");
        request.setCharacterEncoding("UTF-8");

        System.out.println("拦截首页");
        if (session.getAttribute("Admin") == null){
//            response.sendRedirect(request.getContextPath()+"/admin/adminLogin");
            request.getRequestDispatcher("/admin/adminLogin").forward(request,response);
            return;
        }
        filterChain.doFilter(request,response);
    }

    @Override
    public void destroy() {

    }
}
